Feature request: Using Firestore emulator #2183

Version info

**Angular: 8.2.8

**Firebase: 7.0.0

**AngularFire: 5.2.1

Feature Request Details

For now it seems impossible (at least I couldn't find how) to target the Firestore emulator locally.
When I run firebase emulators:start it's telling me firestore: Serving WebChannel traffic on at http://localhost:5003.
Changing the property "databaseURL" to http://localhost:5003 in the firebase config doesn't seem to work

So I guess that's not an option for now?

Thanks